Natural Boric Acid Powder from Rasorite
Rasorite (refined kernite) yields natural boric acid through concentration and limited processing, containing ≤85% H3BO3 on dry weight basis. This product qualifies for HTS 2528.00.00 as it derives from solid mineral deposits, not brine, and serves agriculture and glass industries. It's distinguished from synthetic boric acid by its natural impurity profile.
Import Duty Rates by Country of Origin
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If purity exceeds 85% H3BO3
High-purity boric acid is classified as synthetic oxide/acid in Chapter 28.
If blended into fertilizer mixtures
Borates in formulated fertilizers shift to Chapter 31 headings.
If pebbles containing borates without concentration
Chapter note prioritizes 2517 for unbound aggregates over concentrated borates.
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Import Tips & Compliance
• Submit lab analysis proving H3BO3 ≤85% dry weight; exceedance triggers synthetic classification
• Include chain-of-custody docs from mine to ensure no brine extraction methods were used
Related Products under HTS 2528.00.00
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Ulexite Sodium Calcium Borate Mineral
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Anhydrous Borax Concentrate
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Priceite Calcium Borate Ore
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Kernite Borate Concentrate
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Tincal Crude Borax Ore
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